Heating boiler



April 5, 1932. sywAsLE 1,852,382

HEATING BOILER Filed March 30, 1931 2 Sheets-Sheet 1 /J.? n n ISnnentor1] IM M attorneys.

April 5, 1932. L. s. WAGLE 1,852,332

. HEATING BOILER Filed March 50, 1931 2 Sheets-Sheet 2 Lain @56 if g. +22 lil Patented Apr. 5, 1932 LEWIS i5. WAG-LE, F METUCHEN, NEW JERSEYHEATING BOILER Application filed March 30, 1931. Serial No. 526,505.

The present invention relates to improvements in heating boilers, andhas for an object to provide an improved boiler adapted to absorb morefully and completely the heat units from the gases before such gasesleave the heating surfaces of the boiler and coils.

Another object of the invention is to provide an improved boilerdesigned for safety and simplicity of manufacturing and repairin /Viththe foregoing and other objects in view, the invention will be morefully described hereinafter, and will be more particularly pointed outin the claim appended hereto.

In the drawings, wherein like symbols refer to like or correspondingparts throughout the several views,

Figure 1 is a top plan view of an improved heating boiler constructed inaccordance with the present invention.

Figure 2 is a front elevation of the same.

Figure :l a vertical section taken on the line 3-3 in Figure 1.

Figure 4 is a horizontal section taken on the line 44; in Figure 3, and

Figure 5 is a fragmentary vertical section taken on the line 55 inFigure 2.

Referring more particularly to the drawings. the combustion chamber isindicated at and in the upper portion of this combustion chamber aredisposed a plurality of multiple coils.

The coils may be constructed of any desired diameter and of anv desirednumber of turns or convolutions and of steel, copper or other desiredmaterial. The multiple coils are composed of units 11, 12 and 18 andthey communicate at the lower ends with headers or pipes 14: which leadto the water legs 15. The water legs are included between the inner andouter shells 16 and 17 which preferably extend down to the floor line.At their upper ends the coils 11, 12 and 13 connect by way of headers orpipes 18 with the steam chamber or hot water header 19. The steam or hotwater passes upwardly from this chamber 19 through the risers 20 to theradiators or other points.

The upper portion of the combustion chamber 10 is closed by a head 21through which connects a primary fine, 22 having adamper 23 therein.

In the this 22is a lateral opening or port 24 opening into the frontexcess heat absorbing chamber 25. This front chamber is separated fromthe rear heat absorbing chamber 26 by a partition wall or bafile plate27. This baflie plate extends all the way up to the top of the heatabsorbing chambers but at its lower-ends it terminates short of theouter casing 28 and of the space between the outer casing 28 and theouter shell 17.

The lower end of the coil 29 connects with the water leg 15. The upperend of the coil 29 may connect with the water leg or with the vaporchamber 19, and also preferably with an outlet 31 by which hot water maybe taken off for any appropriate purpose. The outlet 31 may feed adomestic hot water heater.

A flue connection or bypass 32 is con nected between the rear excessheat absorbing chamber 26 and the flue 22 beyond the damper 23. Thereturn pipes are indicated at The exterior casing 28 may be insulated,if desired, in accordance with usual practioe.

In the use of the device it will be appreciated that a large combustionspace or fire box 10 is provided with a multiplicity of coils in itsupper portion so as to increase the water space as much as possible upto a safe margin below choking the draft. The two excess heat absorbingchambers extend completely around the entire outside casing 28 of theboiler and contains a set of coils 29 to absorb the heat units from thegases in their travel over the entire outside shell 17 of the boiler. i

The vertical baffle plate 27 fits tightly to the top of the excess heatabsorbing chambers and also fits tightly around the coils 29 in thecenter of the chamber, thus dividing same into front and rear chambers.The baffle plate extends down within a few inches from the bottom ofthese chambers oneach side of the boiler, leaving openings 34therebeneath for the passage of the gases.

There is a primary flue travel in the chimney through the fiue 22 whichis open directly into the chimney when firing starts.

The damper 23 located in the primary fiue 22 will be closed manually orby the use of an automatic damper closed from the heat passing throughit in a short space of time. This first direct gas travel to the chimneywill have created a draft in the chimney in case there was notsufficient draft to pull hot gases down through chamber 25.

After the closing of the damper 23, the gases will be obliged to flowout the lateral port 24 and into the front excess heat absorb ingchamber 25. In this chamber the gases will be drawn downward from draftand will passbelow the baflie plate 27 through the openings 34 to theother side of such bafiie plate and into the rear excess heat absorbinging from said combustion chamber and having a lateral port communicatingwith the front excess heat absorbing chamber, said heat absorbingchambers communicating at their lower portions, a damper in said flue,and a by-pass from the upper portion of the rear excess heat absorbingchamber to the flue beyond the damper.

LEWIS S. VVAGLE.

chamber 26 up through which the gases will pass. The gases pass outthrough the bypass or out-let pipe 32 to the fine 22 and chi1nney.During the travel 'of the gases through the front and rear excess heatabsorbing chambers, such gases pass around the K excess heat absorbingcoil 29.

For blower type burners, the water legs 15 will be extended across thebottom of the combustion chamber 10 making a water base.

The hot water or steam is carried to the radiators or other sourcethrough the risers 2 0 and the cold water is returned to the boilerthrough the returns 33.

It will be apparent that combustion gases travel over the entire insideand the entire outside of the boiler itself caused by the especiallyconstructed and designed excess heat absorbing chambers.

The outside shell of the boiler will give direct heating surface. Theutilization of this outer surface makes possible an extremely highefliciency in operation.

It is obvious that various changes and modifications may be made in thedetails of construction and design of the above specifically describedembodiment of this invention, without departing from the spirit thereof,such changes and modifications being restricted only by the scope of thefollowing claim.

WVhat is claimedis In a heating boiler, an inner large coinbustionchamber, water legs extending on the sides of the combustion chamber andhaving a vapor spacethereabove, a plurality ofmultiple water coils inthe upper portion of the chamber, each coil provided with connectionsfor engaging the water leg and the top of the combustion chamber, frontand rear excess heat absorbing chamb ers lying about said water legs andabove the vapor space, a heat absorbing water coil extending aroundthrough said excess heat absorbing chamber-s having upper and lowerconnections for engagingthe water leg, the upper connection providedwith an outlet pipe, a flue extend-

